Calendar for mounting on watch band

ABSTRACT

This invention is an improved calendar for mounting on a watch band comprising a fixed reference plate and a calendar plate slidable on the fixed plate to obtain an annual calendar.

[111 3,736,68 1 1 June 5, 1973 United States Patent 1 1 Chang 40/107 .40/l07 X Furedi 54] CALENDAR FOR MOUNTING ON 3,513,580 5 1970 Agres.............. WATCH BAND 1,829,883 11 1931 Wagneretal...

1,905,846 419 3 Shih-Chieh Chang, 37 M0 Fan 3 FOREIGN PATENTS OR APPLICATIONS [76] Inventor:

Street, Alley 2, Min LungLi, West District Tai Chung, Taiwan,

mm fin B m we ar RG 3622 5659 99900 1111 9372 .1 5 63 9 24 9 1 9 66 807 0076 0 7 9 l 1 5 8 a NW D 9 o N .m L D. M P F A 1 2 ll 2 2 .l .l

....40/l09 Switzerland 109 m h m .w M 8 WH W & H 8 im a Q mmm i. d m xR E t. w amm nm "SI FAA 0 5 mm 2 W% M Amw l w "7,C 1 1 W mm WWO mm4 mm me .e us L n d td Um HUM 555 [ll ABSTRACT This invention is an improved calendar for mountin on a watch band comprising a' fixed reference and a calendar plate slidable on the fixed tain an annual calendar.

8 plate plate to 0b- 40/335 ....40/2l C Huber Adams B 579 266 999 NH 990 1 Claim 8 Drawing Figures and 1 CALENDAR FOR MOUNTING ON WATCIIBAND BACKGROUND OF THE INVENTION conventionally a calendar mounted on a watch band comprises only a fixed calendar plate which must be changed each month, and which may be used only during that month. In addition, the plates for succeeding months may be misplaced or lost, which, of course, is

1 also undesirable. This invention is an improved calendar for mounting on a watch band which may be used throughout a calendar year without the need to replace any plates.

SUMMARY OF THE INVENTION The improved watch band calendar of this invention comprises a fixed reference plate and a calendar plate slidable on the fixed plate. Two series of symbols ap pear on the fixed'plate. One denotes the order of a week, such as Monday through Sunday, or Friday through Thursday, spelled out or abbreviated, and the second series contains the numbers 1 to 12, to represent the 12 months of a year. The slidable plate bears the numbers 1 to 31 divided into groups 1 to 7,8 to 14,-

' for that month isprovidednSimilarly, a calendar for each succeeding month maybe provided by sliding the slidable plate so that the cutout 11 exposes the number corresponding to that month.,

BRIEF DESCRIPTION OF THE DRAWING FIG. 1 is a perspective view of the improved calendar of this invention for mounting on a watch band;

FIG. 2 is a bottom view of FIG. 1;

FIG. 3 is a top view of the slidable plate of this invention in extended state;

FIG. 4A is atop view of the fixed tion in extended state;

FIG. 4B is an end view of the fixed plate of FIG. 4A in folded form for attachment to the seat 3 in FIG. 1;

FIG. 5 is a top view of the seat in extended state for holding the fixed plate and mounting on a watch band;

FIG. 6A is a bottom view of a modified form of this invention showing stop means for the slidable plate;

plate of this inven- FIG. 6B is a plain top view (without symbols) of the fixed plate and slidable plate showing other stop means for the slidable plate.

DESCRIPTION OF THE PREFERRED EMBODIMENT bers 1 to 3 1 denoting the days of a month. Those numbers are divided into five columns bearing, respectively, the numbers 1 to 7, 8 to 1-4, 15 to 21, 22 to 28 and 29 to 31. Each column represents the dates of a week starting with a day, Monday or another day, de pending upon the combination with the fixed plate. At the right side (see FIG. 1), or elsewhere, 9. cut out 11 on the slidable plate 1 exposes the number of a month appearing on the fixed plate below (see FIGS. 1 and 4). Other means for indicating the month may be used. Under the cut out 11, or elsewhere, the year is indicated. For easy reading, above the cut out 11 the slidable plate is made opaque in some manner to cover all numbers except the group appearing inside the cut out 11.

The tongues 13 of the slidable plate (FIG. 3) may be folded backward at the edges 12 to form grooves 14 and when the slidable plate is attached to the seat 3, FIG. 2, the tongues overlap as shown in FIG. 2. Shorter tongues 13 of the slidable plate are shown in a modified form in FIG. 6A.

As shown in FIG. 4A, on the left side of the fixed plate the days of the week are indicated (thirteen in total). The starting day in this column will vary depending on the year. Means other than abbreviations may be used to indicate the days of the week. As shown on its right-hand side, the fixed plate is provided with a month series designated by the numbers 1 through 12 divided into groups according to the year. For example, for 1971 the month series is divided into the following groups: 1 and I0; 5; 8; and 2, 3 and 11 (see FIG. 4A).

In assembling the calendar of this invention, the ends 21 of the fixed plate arefirst folded downward then se-v condly folded inward to form double layers 22 and 23. The folded layers tightly clamp the seat 3 to give enough clearance between the watch band and the fixed plate so that the slidable plate may slide between them without an excess of friction.

The projection portions or legs 31 (FIG. 5) at the corners of the seat 3 are folded back (see FIG. 1) to become clamp means for mounting the assembled calendar on the watch band.

Use of the calendar of this invention is quite simple. Referring to FIG. 1, the slidable plate is moved to a position relative to the fixed plate so that the number which represents the month to'be indicated appears inside the cut out 11. The week series on the fixed plate is automatically combined with the table on the slidable plate to become a complete calendar for that month. In the same manner, by setting the cut out 11 for each succeeding month of the year, an annual calendar is obtained.

In a modification of the invention shown in FIG. 6A the tongues 13 of the slidable plate: are shorter, and inside the channel 14 is provided a concave spring means 15 to prevent sliding of the slidable plate after it is set .in a desired position.

In another modification shown in FIG. 6B, a dot 16 projecting downwardly cooperates. with seven (corresponding to the seven groups of months for 1971, see FIG. 4A) dot cavities (several are shown as 24 in FIG. 6B) in the fixed plate. Conversely, the projections may be upward from the fixed plate mating with indentations in the bottom of the slidable plate. These projections and cavities permit the cut out 11 to be set accurately and to remain in a fixed position until reset.

Either, or both, of these modifications may be used with 'my invention.

watch band comprising:

a. a first plate having means thereon for mounting said first plate on a watch band, said first plate bearing on one portion thereof a-series of thirteen names of the days of the week in sequence, said names being aligned along a first axis and spaced apart a predetermined amount, said first plate bearing on a second portion thereof spaced from said one portion the months of the year divided into seven groups, said groups being aligned along an axis parallel to said first axis and spaced apart said predetermined amount,

b. a second plate and means for mounting said second plate on said first plate to enable sliding motion between said first plate and said second plate in a direction parallel to said first axis, said second plate bearing the numerals 1 through 31, inclusive, said numerals being divided into five groups, four of said groups of numerals containing seven numerals in numerical order and one of said groups of numerals containing three numerals in numerical order, the numerals of each of said groups of numerals being aligned along an axis parallel to said first axis and spaced apart said predetermined amount, said groups of numerals being aligned with respect to each other in a direction perpendicular to said first axis, said second plate having a first section juxtaposed over said one portion of said first plate and means through which said first plate can be seen and a second section juxtaposed over said second portion of said first plate and having means throughwhich said first plate can be seen, the length of said first section in a direction parallel to said first axis permitting exactly seven of said names of the days of the week to be seen therethrough, the length of said second section in a direction parallel to said first axis permitting exactly one of said groups of months to be seen therethrough,

said second plate being slidable to display each of the seven groups of months indicia, for each position of said second plate in which one of said groups of months can be seen through said second section seven of said names of the days of the week can be seen through said first section, movement of said second plate with respect to said first plate to sequentially show each of the months through said second section provides a complete calendar for 1 year. 

1. A slidable annual calendar for mounting on a watch band comprising: a. a first plate having means thereon for mounting said first plate on a watch band, said first plate bearing on one portion thereof a series of thirteen names of the days of the week in sequence, said names being aligned along a first axis and spaced apart a predetermined amount, said first plate bearing on a second portion thereof spaced from said one portion the months of the year divided into seven groups, said groups being aligned along an axis parallel to said first axis and spaced apart said predetermined amount, b. a second plate and means for mounting said second plate on said first plate to enable sliding motion between said first plate and said second plate in a direction parallel to said first axis, said second plate bearing the numerals 1 through 31, inclusive, said numerals being divided into five groups, four of said groups of numerals containing seven numerals in numerical order and one of said groups of numerals containing three numerals in numerical order, the numerals of each of said groups of numerals being aligned along an axis parallel to said first axis and spaced apart said predetermined amount, said groups of numerals being aligned with respect to each other in a direction perpendicular to said first axis, said second plate having a first section juxtaposed over said one portion of said first plate and means through which said first plate can be seen and a second section juxtaposed over said second portion of said first plate and having means through which said first plate can be seen, the length of said first section in a direction parallel to said first axis permitting exactly seven of said names of the days of the week to be seen therethrough, the length of said second section in a direction parallel to said first axis permitting exactly one of said groups of months to be seen therethrough, said second plate being slidable to display each of the seven groups of months indicia, for each position of said second plate in which one of said groups of months can be seen through said second section seven of said names of the days of the week can be seen through said first section, movement of said second plate with respect to said first plate to sequentially show each of the months through said second section provides a complete calendar for 1 year. 